How Clean Is Six Mile Lake?
Six Mile Lake is a clean lake by Minnesota standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 11.5 ft. Phosphorus: 16 µg/L. Chlorophyll-a (algae): 6.7 µg/L. Trophic State Index: 45.
Cleanliness Snapshot
| Metric | Six Mile Lake | Minnesota avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 11.5 ft | — |
| Phosphorus | 16 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 6.7 µg/L | <10 = clean |
| Trophic State Index | 45 | <50 = clean |
How does Six Mile Lake compare?
Six Mile Lake's grade of B matches or beats the Minnesota state average of C. It ranks #90 of 133 lakes in Cass County by water quality score. Multi-year monitoring data shows water quality is improving based on 2 years of records.